CSEXCEL 13000mAh Performance Laptop Battery for Apple MacBook Pro 17" Precision Aluminum Unibody A1309 (Early 2009 Mid-2009 Mid-2010) MC226/A MC226CH/A MC226J/A MC226LL/A MC226TA/A MC226ZP/A Battery type: Li-Polymer; Capacity: 13000mAh/95WH; Voltage: 7.2V. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. CE-/FCC-/RoHS-Certified for safety. 24 x 7 email support,12-month hassle-free warranty. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Operation time: the actual operation time will depend on how much electricity is required by the device and how you use it.